<topic>
	<head>
		<title>ASIN</title>
		<keywords>
			<keyword term="functions, ASIN" />
			<keyword term="mathematical functions, ASIN" />
			<keyword term="ASIN function" />
		</keywords>
		<links>
			<link href="Functions.html">Functions</link>
			<link href="Mathematical Functions.html">Mathematical Functions</link>
		</links>
	</head>
	<body>
		<summary>
			<p>
				A mathematical function that returns the angle, in radians, whose sine is the specified double expression; also called arcsine.
			</p>
		</summary>

		<syntax>
			<code xml:space="preserve">ASIN(value AS double) RETURNS double</code>
		</syntax>

		<parameters>
			<params>
				<param name="value">
					<p>
						An angle, measured in radians.
					</p>
				</param>
			</params>
		</parameters>

		<returns>
			<p>
				The sine of <c>value</c>. If <c>value</c> is equal to <c>NaN</c>, <c>NegativeInfinity</c>, or <c>PositiveInfinity</c>, this functions
				returns <c>NaN</c>.
			</p>
		</returns>

		<examples>
			<sampleCode language="NQuery.SQL" xml:space="preserve">SELECT 'The ASIN of the angle -1 is: ' + TO_STRING(ASIN(-1))</sampleCode>
		</examples>
	</body>
</topic>
